Neanderthals and other extinct human lineages might have been ancient mariners, venturing to the Mediterranean islands thousands of years earlier than previously thought. This prehistoric seafaring could shed light on the mental capabilities of these lost relatives of modern humans, researchers say. Scientists had thought the Mediterranean islands were first settled about 9,000 years ago by Neolithic or New Stone Age farmers and shepherds... For instance, obsidian from the Aegean island of Melos was uncovered at the mainland Greek coastal site of Franchthi cave in layers that were about 11,000 years old, while excavations on the southern coast of Cyprus...